Authoritarian

1. Of, or relating to, absolute obedience to an authority.
2. Characterised by a tyrannical obedience to an authority; dictatorial.
3. Tending to impose one's demands upon others as if one were an authority.

Synonyms

• (characterised by a tyrannical obedience to an authority): illiberal, oppressive
• (tending to impose one's demands): arrogant, commanding, haughty, imperious
• bossy

Antonyms

• (characterised by a tyrannical obedience to an authority): liberal
• (tending to impose one's demands): servile, humble, modest